Carbureter for explosive-engines.



No. 891,322. PATBNTED JUNE 23,1908. P. H. BRENNAN.

GARBURETER FOR EXPLOSIVE ENGINES. APPLIGATIONIILED Nov. 21, 1902.

IN VENT OR V seat tothe valve it is easier following to he a full, clear, and exact devarious deta stood by reference,

, g st.

lgrV with the at surface 1 1S raisedby the action of the air No. 891,322; Original application filed January 11,

, Specification of Letters Patent.

1901, Serial No. 855309. Divided and this application filed November- 21,

, fatented Jime23, 1908.

Sena-1N0; 182,190.

To all whom it mag concern: g .31 Be it known that I, PATRICK H. BRENNAN, citizen of the United States, residing at S'yracuse, in the county of Onondaga andState of New York, have invented certain new and useful Improvements in Carbureters forExplosive-Engines'; and I 'do hereby deolar'e'th'e scriptionof the invention, such as will enable others skilled in the art td which. it apper-; tains to make and use the same. Q

My invention relates to the carbureter-of a gas engine, and consists in a' certain construc tion and arran ement of parts, whereby a 1 new and more e ective 0 eration is obtained; it is substantially a division of my applieation Serial No. 89,309,.filed January 11, 1 901, and is referably arranged andused'wit'h-the' two cy inder engine asthere shown; H l The princi le of my invention and the il of construction willbe under-' to the drawing herewith,-

in which Figure I is a vertical cross section of-my carbureter mechanism. Fig. 11 1s a'section preceding of the upper shell showing the o eration andthevthree way valve. Fig. I is an elevation of the main shell detached. Q; Fig s. IV and VII are respectively end,an d--side elevations of the three-way valve detached. Figs. V. and VI arerespectivelyan elevation and bottom lan of the 11;. =ger valve detached. Fig. VI I is a horizontal cross section on line VIII of Fig. 11. Fig. IX is a plan of the guide plate detached.- Fig. an isometric view of the plunger valve stemgdetached showing a modi at right angles to the cation in its construction.- Fig. X1 is a vertical cross section of the'upper portion of the gasolene reservoir and starting or priming mechanism. a Y

In the figures 1 indicates the separable air case into which the air enters through openwhence it passes through openings 4, .to the lower contracted portion 5, of the main shell 6, raisingy'plunger valve 9, having ribbedconical portion 10, fitting within the bore of, the contracted portion so as to move up and down freely therein without any seat; the valve stem12, of the plunger fits seat 13 of the inlet 14', and there being only this one to make and ad-' Theplun er valve stem as shown in and-tapering tip, to displace .trolledto three-way valve also cont-r0 ling the. air nlet inlet, regulated by gasolene enters by mitted directly to the gas and cut same by the stroke of the engine,-givin'ga measured quantity of gas at each suction stroke The gas, broken up mixes with air, thence passes 11 rod21, fitted with a sprin -tolin1it without shock-itsu perrn'o'venient) ndthenceintothe bythe conical-portion, into the a 's hellthrough the perforated gui e plate-20 (threaded to engage positively with the top of-the shell andacting'as ajguide fonjvalv'e upper she whence; by; the three-wayvalye 23, operated by lever 24,

the cylinder throu h'mouth 25, the

its-admissions c-o'na 23, being provided with the long bearing 27 on the leit,- andthefshort-bearing 28' on the right, as shown in Flg. I15. At the top of the main shell, the coldes-t point,' 'frostsometiines forms in the coldest weather', particularly when lower grade oil is used ing 31, passing out througho'pemng 32. the admission of more cold- 'airthrough the the three-way valve, a perfect explosive mixture of hydrocarbon gas s produced, so that at every inspiration'oi the cy inders the plunger-is caused to rise by infiowing' air, and as it quantity of through pipe 35, controlled by needle valve end, from reservoir '38,

aut( 1naticallyregu- 36 arrangediinits containing the float .39, lating the amount of oil contained therein, and closing the inlet 40, through which the 'the float tip 41.

43 is the air vent, 4 l'the' pipe and45the not vaporizing-so well as the higher grade, thispoint is; protected by the jacket 30, .t o'which hot air from the-exhaust is admitted through ope;- y

falls back to place it closes the inlet 14 andforces'o'ut a measured cock, by means of which the gasolene is adthe main shell when necessary'through nozzle- AGJ I. prefer to construct these parts as shown-m Fig. X1, in which 50 is thefloat chamberorreservoir cover provided withthe integral ortionc'on- .110 valve 52, having handle 53 to admit the gas0-'.

taining a channel 51,- controll vby" needle lene directly throughnozzle' 46 to'the main 'topump with greater force.

shell. This is not used normally but is very plunger valve or the normal inlet passage ecomes clogged or choked. I also construct aried form of plunger as shown in Fig. X (instead of the' form shown in Fig. V) with i-l e square end and the truncated edges so that it does not cut ofi, but permits the gasolene to pass, acting like an atomizer to'let it come through in a spray by the action or suction of the air. v

The object of reducing the lower portion of the main shell is to give more velocity and pressure to the air, insuring the carrying of the gas through and the lifting of the valve This plunger .valve acts like a displacement pump and in pumping pulverizes' and converts into. spray the gasolene. As the inward or suction strokes of the'pistons take place, the air is drawn in, raising the plunger valve and allowing the gasolene" to rise in the inlet around the lower end of the plunger. As the suction stroke is com leted, the plunger falls back into lace and dis laces a measured quantity 0 gasolene, an

at the same time breaks up and thoroughly mixes this gasolene with the air, so that at the next stroke,

. the other.

it is/drawn in and S11 plied to one cylinder or thus pulverized, it is held in sus ension' between the motions of the two cy 'nders momentarily, so thatthe spray and air have a chance thoroughly to mix, the valve momentarily remaining idle. i

The object of forming the conical portion of the valve to fit down into the bore is to make it easier to construct and adjust, and to avoid the inconvenience which cometimes arise from dirt collecting and ice forming under the valve where provided with a seat at theupperend of the contracted portion 2 A short time only is afiorded for the gasolene to flow into, the lower space, the amount bein regulated by the setting of'the end nee e valve, and uick ressure regulated by the flow in the loat ciamber. .The ob- 'ect of the three-way valve, easily operated y its lever, is to promptly control the amount of charge, to admit extra air when i 1 necessary and to regulate the mixture, as in case the carbureter becoming flooded with oil or gas, withthe lever and valve shown in the osition inFigs. I and II, the flow charge is a mitted, throwing the lever to the right, the long bearing 'on the left ermits a throttling and positivel shuts o the power. If the mixing cham 'er becomes flooded, the lever can be thrown to the left and through the short bearing on the right additional air is admitted through the valve port to insure combustion. This regulates itself quickly When t e mixture or charge is.

and the lever is .then drawn' 'to normal position to admit the flow charge.

Having thus describedmy' invention, what I claim and desire to secure by Letters Patent, is

1. In the carbureter of a gas en ine, the combination with the main valve s ell, ofa valve therein, a source of supply for the gasolene, a float chamber connected to the source of suplpl a pipe from the floatchamher to the s elij a supplementary pipe from the source of supply directly to the shell, a nozzle on said sup lementary pi e to conductthe asolene irect to the shell and a needle va veto control said supplementary supply.

' 2.111 a carbureter for explosive engines, the combinationwith the main valve shell having a contracted lower portion provided with air inlets, a plunger valve arran ed therein, a float chamber, a float arrange in the chamber, a pipe from the lower portion ofthe float chamber to the lower portion of the main shell, a pipe to supply gasolene to the float chamber, a supplementary pipe communicating with the source of supply abovethe float chamber and the spray nozzle on said supplementary pipe communicating with the main shell above the valve, and a controlling needle valve arranged in said supplementary. ipe.

3. In the car ureter for a gas en ine, a

main valve shell having a pontracte lower portion provided with air inlets, a plunger valve having a conical ribbed portion fitted to the bore of said reduced portion, a valve stem fitted to the oil inlet, 'saidvalve stem being flattened onone side, a rod on the valve fitted to a guide plate, said perforated guide plate threaded to be secured to the upper end of the main shell, an upper shell fitted to the upper end of the mamshell, a hot-air jacket arranged around thelower. end of the upper shell, means 'to supply heated air from the exhaust to said jacket, a

cylindrical three way valve having a suitable port fitted to said upper shell and hav- *ing an external operative lever, .and means to supply gasolene to the carbureter through the Oll inlet.

4. As a new article of manutacture, a carbureter fora gas engine, havin in combina-. tion an oil reservoir and ashel inclosing a vaporizing chamber, a connecting pipe from the lower portion of the reservoir to the I lower portion of the chamber, said chamber being provided with an air inlet and a wt or outlet, a plunger valve fn'ontrolling the ow of Oil into the chamber, an oil inlet pipe to the top of the reservoir, and a pipe provided with a nozzle and connected to the oil inlet pipe above the reservoir, to communicate directly with the vaporizing chamber above the plungervalve.

5. In the carbureter of a gas engine, the

flattened sides, said shell having a vapor in at in its lower portion,

outlet and-a valve controlling said vapor .outlet.

6. ln the earburete'r of a gas engine, the combination with a shell inclosing a VHPOIIZ! in chamber, having an Oll inletand an air and au plementar-y air let in its uppxer ortion, 0 a cylindrical valve fitted in t e s ell and controlling the outlet and upper air inlet, the shellvbeing formed with side earin s for said valve, narrow on one side and wi e on the other, and said -valve being rovided with a'mouth, not wider than the w1debearing and wider than the narrow bearing, whereby when turned to'one side the vapor 'outflow is stopped and when turned to the and a vapor outlet other side, additional air is admitted to mix with the outflowing vapor.

7. In the carbur'eter of a gas engine, hav in an air-inlet, an out-let and a tubular in et for the liquid fuel, a plunger-valve hava ribbed conical portion arranged in mediately above the inlet and a stern extending into said tubular inlet, said stern being fiattened at one side at leastso as not completel to close the inlet. I n the carbureter of a gas'engine havmg an air inlet, an outlet for the mixed vapor and aitubular inlet for the liquid fuel, a plunger-valve having a substantially tubular stein extending said stem beingl flattened at one side at least so as not eomp etely to close the inlet.

down into the tubular inlet,

In testimony whereof I afiix my signature in presence of two witnesses. v PATRICK HBRENNAN. Witnesses: I

C. C. SCHOENECK,

MJB. Si u'rn. 

